Implantable signal amplifying circuit for electroneurographic recording
    2.
    发明授权
    Implantable signal amplifying circuit for electroneurographic recording 有权
    用于电子照相记录的可植入信号放大电路

    公开(公告)号:US08086305B2

    公开(公告)日:2011-12-27

    申请号:US11315884

    申请日:2005-12-21

    IPC分类号: A61B5/04 H03F3/45

    CPC分类号: A61B5/04001

    摘要: An implantable microvolt-level signal amplifying circuit may be used for resolving electrical signals generated by nerves in the presence of larger amplitude signals generated by muscles, the heart, or external noise sources. The circuit has a low-noise, high Common Mode Rejection Ratio (CMRR) preamplifier, followed by a cascade of stages, which provide filtering and further amplification of the neural signal. The band-pass amplifying circuit can also present high Power Supply Rejection Ratio (PSRR). The output is offset-compensated by a DC restoration stage. Nerve protection circuitry minimizes or blocks DC current flow through the input terminals in the event of semiconductor failure in the preamplifier. The circuit may be incorporated onto a common monolithic circuit with follow-up circuitry for controlling Functional Electrical Stimulation (FES) devices.

    摘要翻译: 在由肌肉,心脏或外部噪声源产生的较大振幅信号的存在下,可植入微电平信号放大电路可用于分辨由神经产生的电信号。 该电路具有低噪声,高共模抑制比(CMRR)前置放大器,其次是级联级,提供了神经信号的滤波和进一步放大。 带通放大电路还可以提供高电源抑制比(PSRR)。 输出由直流恢复级补偿。 在前置放大器发生半导体故障的情况下,神经保护电路可以最大限度地减少或阻止通过输入端子的直流电流。 电路可以并入到具有用于控制功能电刺激(FES)装置的后续电路的公共单片电路上。

    Implantable signal amplifying circuit for electroneurographic recording

    公开(公告)号:US06996435B2

    公开(公告)日:2006-02-07

    申请号:US09988112

    申请日:2001-11-19

    IPC分类号: A61B5/00

    CPC分类号: A61B5/04001

    摘要: An implantable microvolt-level signal amplifying circuit may be used for resolving electrical signals generated by nerves in the presence of larger amplitude signals generated by muscles, the heart, or external noise sources. The circuit has a low-noise, high Common Mode Rejection Ratio (CMRR) preamplifier, followed by a cascade of stages, which provide filtering and further amplification of the neural signal. The band-pass amplifying circuit can also present high Power Supply Rejection Ratio (PSRR). The output is offset-compensated by a DC restoration stage. Nerve protection circuitry minimizes or blocks DC current flow through the input terminals in the event of semiconductor failure in the preamplifier. The circuit may be incorporated onto a common monolithic circuit with follow-up circuitry for controlling Functional Electrical Stimulation (FES) devices.